Improvement in inkstands



.6) i we@ *Wluited @anni i @tibia Leners PatmpNo. 83,126, zaad acaba 2o, 186e,

IMPROVEMENT IN IKSTAN'DS.

l The Schedule referred to in these Letters Patent and making part of the same.

the improved ink-v the cap ofthe flexible stopples removed to expose these stopples and thedevices which compress them.

Figure 3 is a perspective view of the body of the inkstand, with the top removed to expose the inlrvessels and exible stopples.

Figure 4 is a dialnetrical section through the inkstangl, taken in the plane indicated by red line :c a' in Figure 5 is a cross-section through the inkstand, taken in the vertical plane indicated b v red line y @fin fig. 2. y

Similar letters of reference'imlicate corresponding parts in the several figures.

This invention relates to certain novel improvements on inkstands which are provided with exible diaphragms, or elastic bags, and also with devices for ilexing or collapsing the saine in the act of uncovering the supply-cups, whereby the ink is caused to rise from the ink-reservoirs into said supply-cups when they are uncovered, and to return back intothe' reservoirs when these cups are covered.

An instance of this ent, No. 18,060, wherein the ink-reservoir is provided with an elastic diaphragm, a hinged cover for its supply-cup,l and a device which will cause the ink to rise in this cup when its cover is raised.

It has been found very difiicult to attach an elastic diaphragm to an ink-reservoir so that its joint will remain airtight, and unless a tight joint is preserved, the inkstand fails to perform its oce.

To remedy this objection, the nature of the first part of om` invention consists in an elastic self-fastening stopple, constructed with an air-chamber, and adapted to iit tightly into aA -hole made in an ink-reservoir for the purpose of serving as a means for condensing the air in' such reservoir and thereby causing the ink to rise in the supply-cup, as will be hereinafter explained.

The second part of our invention consists in providing for collapsing or flexing the elastic bag or dias phragm of an ink-reservoir by means of a supply-cup cover, which is adapted to slide upon the top of the inkstand, and a rocking pressure-arm, constructed, arranged, and operating as will be hereinafter explained.

The third part of our invention consists in an inkst'and which is constructed with two ink-reservoirs, and

' also with a cover which is adapted for closing both of the supply-cups thereof at one and the same time; said cover being provided with means which will cause kind is found in the Letters Patsurface of the top'plate B by means of a cap, c, which stopplee-nlargement the ink to rise into either one of the supply-cups in the act of exposing the same by moving the cover, as will be hereinafter described.

To enable others skilled in the art to understand our invention, we will describe its construction and operation.-

. In the accompanying drawings, Arepresents the body or outer casing of the inkstand, which may be made cylindrical or of any other suitable shape or design, and which may be made of metal or othersutable material.

This case is constructed with a iixed bottom and a removable flat top, B, which latter is heldin its place upon the upper edge of the cylinder A, by means o f a pin-fastening,'g', diametrically opposite which is aspring thumb-latch, g, asclearly shown in There are four holes made through the top plate B, two of which, J J, are openings leading to supply-cups G' G-, of two independent ink-reservoirs Gr' G. The other two holes receive through them the hollow enlargements E E, of tubular stopples s s, as clearly shown in figs. 2 and 5.

At or near the centre of the top plate B, is a fixed perpendicular stud, b, which is at equal distance from the centres of the two holes J J, and which receives upon it and forms a pivot for the arm-of a vibratingy cover, D, for the holes J J.

This cover is adapted for closing both of the holes J J, when in the central position indicated in fig. 1, and by sliding it toward the right or left hand, either one of the said holes'J may be uncovered, and the ink-cup beneath it exposed, as shown in iig. 2.

y. The post a, which is affixed in the centre of the slid ing coyer D, is intended as a finger-.piece by which to slide the cover. e

This cover is held down snugly in place upon the dat is fitted upon this plate by' means of frictional holdingstuds, and which also serves to enclose the devices for effecting the raising of ink in the supply-cups.v

The rear extension of the sliding cover D is rounded as shown at d, and fitted into a rightangular slot, c, made through a triangular pressure-plate, F, as shown inigs.2and 5. f

This plate F is pivoted near its right angle to the top plate B in any suitable. manner, so that it will be caused to oscillate by moving the cover D. 'l

When the coverD is moved to the left, to expose the right-hand opening J, the -pressure-plate F will be moved toward the right-hand, and will press upon and collapse the stopple-enlargement E of the reservoir beneath said right-hand opening J, and cause the ink to rise inthe supply-cup of this reservoir; and when the cover is moved toward the right to expose the left-hand openingJ, said pressure-plate F will operate upon the of thereservoir which is beneath this opening, and cause the ink to rise in the supplycup of this reservoir. A

The two ink-reservoirs G G, which are within the case A, are of a semi-cylindrical shape, and may be removed from their case at pleasure by first taking oii the top plate B. i

Each reservoir is constructed witha supply-soup, G',

of a funnel-shape, with the contracted neck ofthe funnel extending down nearly to the bottom of its reservoir.

Each reservoir is also constructed with a4 circular concave sea-t, 7l., having a hole centrally through it, as l The stopple s and bag or ball E may be made of one piece of India rubber, or, if desirable, the Indiafrubber ball or bag may be made separate from the stopple, in' which case the stopple might be made of glass or other material diiierent from that of which the bag is made.

XVe prefer to construct the bag or ball and its stopple of one piece of vulcanized India rubber, as shown in the drawing, iig. 5.

It will be seen that when the stopple s is forced into theV hole which is made for it through the top of the reservoir G, itwill be compressed, but by its expansive nature it will make a perfectly tight joint, which will prevent the escape of air from said reservoir through the hole which is closed by it; and it will also be seen that by pressing upon and collapsing the bag or hollow ball E upon said stopple, the air in this hall will be forced into the reserveir above the ink therein, and thus causesome of the ink to rise in the supply-cup or fountain G.' When pressiu'e is removedii'om said ball E, it will expand again and cause the ink which was raised in the supply-cup to return back into the reservoir.

When the several parts above described are adjusted in proper position, the reservoirs G G being supplied with wiiting-iiuid; the iluid can be made to rise in either one of the supply-cups G, which is exposed by sliding the cover D laterally, as above set forth. y When the cover is adjusted in the central position shown in fig. 1, the oscillating pressure-plate F will be held between the two air-balls E E, and will not press up either one of these balls, consequently there will be no iluid in the supply-cups when these cups are covered.

'lhe obj ect of using two reservoirs is to adapt a single inkstand to contain writing-.fluid of different colors or kinds, and to e'eot the covering of both supply-cups of said reservoirs, and the raising of the iiuids in these' \Ve do not conne om` invention tothe precise contiivances herein set forth, as the same results may be attained by modifying their form and arrangement. Nor do we desire to make claim broadly to the use of an elastic diaphragm or hollow ball in conjunction with a hinged cover to the supply-cup, whereby ink is caused densation cfa-i1' in the reservoir.

l. An ink-elevating elastic air-sack, constructed with a perforated corking end which is of thicker material than the body of the sack, substantially as described.

reservoirs G, combined' and operating substantially as described.

3. The cover D, pivoted atb, and extended into a lever beyond said pivoted point, and connected with a laterally-rocking or rolling plate F, substantially in the manner described.

4. The ink-reseivoirs G G, in combination with a by the movement of a single cover to said cups, sub

stantially as described.

- H. P. ANDREWS.

M. E. RAWSON. YVitnesses to signature of H. P. ANDREWS:

L. L. BOND, E. T. BOND. Witnesses to signature of M. E. RAWson M. G. WATTERsoN, E. DBAKER.

cups, by the movement of a single sliding cover or cap.

to rise in such cup by the lifting ofthe cover and con? 7e have produced a removable self-fastening air-V vessel which will be perfectly air-tight when in place,

Vhat we claim as new, and desire to secure by Let- 2. The horizontally-sliding cover D, pressure-plate F, one or more air-chambers E, and one or more ink-` case,vA, which is provided with a`ren1ovable top andv means for eiiecting the raising of ink into supply-cupsy 

